dlls/qedit/main.c

   1 /*              DirectShow Editing Services (qedit.dll)
   2  *
   3  * Copyright 2008 Google (Lei Zhang)
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "qedit_private.h"
  21 #include "wine/debug.h"
  22
  23 WINE_DEFAULT_DEBUG_CHANNEL(qedit);
  24
  25 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
  26 {
  27     switch(fdwReason) {
  28         case DLL_PROCESS_ATTACH:
  29             DisableThreadLibraryCalls(hInstDLL);
  30             break;
  31         case DLL_PROCESS_DETACH:
  32             break;
  33     }
  34     return TRUE;
  35 }
  36
  37 /******************************************************************************
  38  * DirectShow ClassFactory
  39  */
  40 typedef struct {
  41     IClassFactory ITF_IClassFactory;
  42
  43     LONG ref;
  44     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  45 } IClassFactoryImpl;
  46
  47 struct object_creation_info
  48 {
  49     const CLSID *clsid;
  50     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  51 };
  52
  53 static const struct object_creation_info object_creation[] =
  54 {
  55     { &CLSID_MediaDet, MediaDet_create },
  56     { &CLSID_SampleGrabber, SampleGrabber_create },
  57 };
  58
  59 static HRESULT WINAPI
  60 DSCF_QueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
  61 {
  62     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  63
  64     if (IsEqualGUID(riid, &IID_IUnknown)
  65         || IsEqualGUID(riid, &IID_IClassFactory))
  66     {
  67         IClassFactory_AddRef(iface);
  68         *ppobj = This;
  69         return S_OK;
  70     }
  71
  72     *ppobj = NULL;
  73     WARN("(%p)->(%s,%p),not found\n",This,debugstr_guid(riid),ppobj);
  74     return E_NOINTERFACE;
  75 }
  76
  77 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
  78 {
  79     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  80     return InterlockedIncrement(&This->ref);
  81 }
  82
  83 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
  84 {
  85     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  86
  87     ULONG ref = InterlockedDecrement(&This->ref);
  88
  89     if (ref == 0)
  90         CoTaskMemFree(This);
  91
  92     return ref;
  93 }
  94
  95 static HRESULT WINAPI DSCF_CreateInstance(LPCLASSFACTORY iface, LPUNKNOWN pOuter, REFIID riid, LPVOID *ppobj)
  96 {
  97     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  98     HRESULT hres;
  99     LPUNKNOWN punk;
 100
 101     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 102
 103     *ppobj = NULL;
 104     hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk);
 105     if (SUCCEEDED(hres)) {
 106         hres = IUnknown_QueryInterface(punk, riid, ppobj);
 107         IUnknown_Release(punk);
 108     }
 109     return hres;
 110 }
 111
 112 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 113 {
 114     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 115     FIXME("(%p)->(%d),stub!\n",This,dolock);
 116     return S_OK;
 117 }
 118
 119 static const IClassFactoryVtbl DSCF_Vtbl =
 120 {
 121     DSCF_QueryInterface,
 122     DSCF_AddRef,
 123     DSCF_Release,
 124     DSCF_CreateInstance,
 125     DSCF_LockServer
 126 };
 127
 128
 129 /***********************************************************************
 130  *              DllCanUnloadNow (QEDIT.@)
 131  */
 132 HRESULT WINAPI DllCanUnloadNow(void)
 133 {
 134     return S_OK;
 135 }
 136
 137 /*******************************************************************************
 138  * DllGetClassObject [QEDIT.@]
 139  * Retrieves class object from a DLL object
 140  *
 141  * PARAMS
 142  *    rclsid [I] CLSID for the class object
 143  *    riid   [I] Reference to identifier of interface for class object
 144  *    ppv    [O] Address of variable to receive interface pointer for riid
 145  *
 146  * RETURNS
 147  *    Success: S_OK
 148  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 149  *             E_UNEXPECTED, E_NOINTERFACE
 150  */
 151
 152 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 153 {
 154     unsigned int i;
 155     IClassFactoryImpl *factory;
 156
 157     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 158
 159     if ( !IsEqualGUID( &IID_IClassFactory, riid )
 160          && ! IsEqualGUID( &IID_IUnknown, riid) )
 161         return E_NOINTERFACE;
 162
 163     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 164     {
 165         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 166             break;
 167     }
 168
 169     if (i == sizeof(object_creation)/sizeof(object_creation[0]))
 170     {
 171         FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 172         return CLASS_E_CLASSNOTAVAILABLE;
 173     }
 174
 175     factory = CoTaskMemAlloc(sizeof(*factory));
 176     if (factory == NULL) return E_OUTOFMEMORY;
 177
 178     factory->ITF_IClassFactory.lpVtbl = &DSCF_Vtbl;
 179     factory->ref = 1;
 180
 181     factory->pfnCreateInstance = object_creation[i].pfnCreateInstance;
 182
 183     *ppv = &(factory->ITF_IClassFactory);
 184     return S_OK;
 185 }